A kind of milling method of Multi-layer metal alloy clad steel plate
Technical field
The present invention relates to the preparation of composite, be especially applied in composite metal plate field, specifically a kind of milling method of Multi-layer metal alloy clad steel plate.
Background technology
At present, resource provision contradiction is increasingly outstanding, and the high enterprise of nickel valency causes the domestic Stainless Steel production cost of raw material to increase sharply, production cost and use cost strengthen, and China's nickel resources is very deficient, dependence on import mostly, this just need to find out a production technology of saving the energy.Double metallic composite material had both possessed the performance such as corrosion-resistant, wear-resisting of the metals such as stainless steel, aluminium, copper, titanium, can save again precious metal, reduced costs, and had outstanding role for the energy-conservation aspect of China.
Stainless steel material is the metal material that a kind of performance is very excellent, be widely used in electronics, space flight, aviation, chemical industry, automobile, the industrial circles such as machinery, stainless steel materials is its important product form, account for 40~60% of total output, but due in recent years, chromium, the shortage of the resources such as nickel, will have a strong impact on stainless supply, therefore, for solving the caused deficiency of shortage of raw materials, realize the strategy of sustainable development of metal material, and the method that adopts accumulation composite rolling is produced layer composite material, reduce greatly current stainless steel material to chromium, the raw-material demand such as nickel, alleviate imbalance between supply and demand.Meanwhile, layer composite material thickness proportion is even, and structure property is good, also can adjust as requested proportioning, meets the demand of all trades and professions to material property.
China relies on explosive type composite for a long time, this technology danger, production cycle limitation are very large, blow and can not produce, snow and can not produce, the following specification of 8 ㎜ can not be produced, 60~100 ㎜ can not produce, and the stress that produces of blast can not be eliminated completely, the stress accident of blasting repeatedly on the project application such as oil, petrochemical industry.
Summary of the invention
Object of the present invention, it is exactly the problem existing for solving prior art, and design a kind of milling method of Multi-layer metal alloy clad steel plate, make the steel plate the produced ingredient stability while dispatching from the factory, surfacing is without local stress, and this method can produce continuously, be not subject to the impact of weather and specification, large-scale production in batches.
Technical scheme of the present invention is: a kind of milling method of Multi-layer metal alloy clad steel plate, and its concrete rolling step includes:
Step 1, polishes, cleans decontamination to each metal level;
Step 2, stacks metallic plate neatly according to above-mentioned order;
Step 3, the gap welding of stainless steel layer and carbon steel layer, adopts secondary welding mode, and welding is carried out seal welding according to interior external ordering, utilizes vavuum pump to vacuumize processing.
Step 4, heats the multilayer steel plates having superposeed to 800 degree and keeps 3 hours;
Step 5, puts into clad steel plate rolling mill rolling 5 ~ 8 passages (determining rolling pass according to finished product thickness) by upper step light plate;
Step 6, the sheet material that rolling is completed carries out surrounding cutting to be peeled off, and then carries out steel plate heat treatment, adopts cold leveling technology that steel plate is fixed to every square meter unevenness and is less than 2mm.
Described multiple layer metal includes upper and lower two-layer carbon steel sheet, is provided with two-layer corrosion resistant plate between carbon steel sheet.
Between described carbon steel sheet and corrosion resistant plate, be provided with scaling powder; Between described two-layer stainless steel, be coated with antitack agent.
Described stainless steel layer is that coating thickness is 0.5 ~ 10mm, and carbon steel layer is that groundwork thickness is 2 ~ 100mm.
Described scaling powder is Ni-based anticorrosion alloy.
In described step 3, welding manner is for adopting submerged arc or manual arc welding method.
Described leveling adopts level(l)ing machine special equipment to carry out cold leveling.
In described step 1, scale removal process is: first utilize milling drum that carbon steel and stainless steel watch surface oxidized skin are removed, until expose fresh metal, then clear up dust, impurity with clean cold wind.
Beneficial effect of the present invention can draw by such scheme: because multiple layer metal forms steel billet to be rolled, in the middle of two kinds of metals, place scaling powder, specific billet rolling temperature control is melted scaling powder and is flowed between steel, form moistened surface, in the powerful power of depressing of milling train, through the controlled rolling of multi-pass, make the effective flow of carbon steel and nickel-base alloy surface and metallurgical binding, bond strength is high, improve the quality of products without local stress, large-scale production, improve lumber recovery, production range is extended to 2mm ~ 100mm, the prodution and development of enterprise has been created to huge space.
As can be seen here, the present invention compared with prior art has substantive distinguishing features and progress, and the beneficial effect of its enforcement is also apparent.
brief description of the drawings:
Fig. 1 is the structural representation of steel plate layer;
Steel plate schematic cross-section when Fig. 2 is rolling;
Wherein, 1 is carbon steel layer, and 2 is stainless steel layer, and 3 is multilayer steel plates, and 4 is Rolling roller.
detailed description of the invention:
In order to understand better the present invention, explain in detail embodiments of the present invention below in conjunction with accompanying drawing.
Detailed description of the invention: as shown in Figure 1, 2, a kind of milling method of Multi-layer metal alloy clad steel plate, its concrete rolling step includes:
Step 1, polishes, cleans decontamination to each metal level;
Step 2, stacks metallic plate neatly according to above-mentioned order;
Step 3, the gap welding of stainless steel layer and carbon steel layer, adopts secondary welding mode, and welding adopts submerged arc or manual arc welding method to carry out seal welding according to interior external ordering, utilizes vavuum pump to vacuumize processing.
Step 4, heats the multilayer steel plates having superposeed to 800 degree and keeps 3 hours;
Step 5, puts into clad steel plate rolling mill rolling 8 passages (determining rolling pass according to finished product thickness) by upper step light plate;
Step 6, the sheet material that rolling is completed carries out surrounding cutting to be peeled off, and then carries out steel plate heat treatment, adopts cold leveling technology that steel plate is fixed to every square meter unevenness and is less than 2mm.
Described multiple layer metal includes upper and lower two-layer carbon steel sheet, is provided with two-layer corrosion resistant plate between carbon steel sheet.
Between described carbon steel sheet and corrosion resistant plate, be provided with scaling powder; Between described two-layer stainless steel, be coated with antitack agent.
Described stainless steel layer is that coating thickness is 10mm, and carbon steel layer is that groundwork thickness is 2mm.
Described scaling powder is Ni-based anticorrosion alloy.
Described leveling adopts level(l)ing machine special equipment to carry out cold leveling.
In described step 1, scale removal process is: first utilize milling drum that carbon steel and stainless steel watch surface oxidized skin are removed, until expose fresh metal, then clear up dust, impurity with clean cold wind.
Above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art make in essential scope of the present invention, also should belong to protection scope of the present invention.